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Friedrich
Heating & Cooling Combined Unit

Model # THC15R34 Official Friedrich central packaged terminal unit

Here are the diagrams and repair parts for Official Friedrich THC15R34 central packaged terminal unit, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 103 parts  |
Pump Condenser 25032900
#60A

Control box assembly diagram

Pump condenser

Part #25032900

The manufacturer no longer makes this part, and there's no substitute part

Transformer 21091226

#NI10

All parts diagram

Transformer

Part #21091226

The manufacturer no longer makes this part, and there's no substitute part

Tray 21058876
#19

Unit assembly diagram

Tray

Part #21058876

The manufacturer no longer makes this part, and there's no substitute part

Extension Spring 21058530
Extension spring

Part #21058530

The manufacturer no longer makes this part, and there's no substitute part

Holder,fus 21058447
#74B

Control box assembly diagram

Holder,fus

Part #21058447

The manufacturer no longer makes this part, and there's no substitute part

Plate Dial 21058516
#70

Control box assembly diagram

Plate dial

Part #21058516

The manufacturer no longer makes this part, and there's no substitute part

Clip,t Sta 21058518
#66A

Control box assembly diagram

Clip,t sta

Part #21058518

The manufacturer no longer makes this part, and there's no substitute part

Collar Assembly 25009700
#44A

Air handler diagram

Collar assembly

Part #25009700

The manufacturer no longer makes this part, and there's no substitute part

Fuse,time 21058451
#74E

Control box assembly diagram

Fuse,time

Part #21058451

The manufacturer no longer makes this part, and there's no substitute part

Thermostat 21059023

#NI08

All parts diagram

Thermostat

Part #21059023

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

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Why won’t my furnace burners won’t stay lit?

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch...

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Why won't my furnace turn on?

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail...

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Why isn’t my air conditioner cooling well?

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor...

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Why isn’t my air conditioner cooling?

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor...

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure...

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Why won't my air conditioner turn on?

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure....

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Most common repair guides to help fix your heating & cooling combined units

These step-by-step repair guides will help you safely fix what’s broken on your HVAC system.

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How to unclog the air conditioner drain line

How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d...

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Repair difficulty
Time required
15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta...

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15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it....

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Repair difficulty
Time required
30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

Use the advice and tips in these articles and videos to get the most out of your HVAC system.

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Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long....

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

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